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A236140 Number of (n+1)X(2+1) 0..3 arrays colored with the maximum plus the upper median plus the minimum minus the lower median of every 2X2 subblock 1
2976, 79260, 2113860, 56388240, 1503850638, 40110759152, 1069867016024, 28536871273336, 761125924608458, 20300768006274458, 541469807189678490, 14442309765297348684, 385207864338207023016, 10274348880475607720026 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A236142

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=2

..2..3..1....0..2..2....3..2..3....2..0..0....2..0..1....3..2..3....0..0..0

..0..2..2....3..1..2....0..0..3....1..3..0....2..2..0....0..1..3....1..2..0

..3..1..0....3..0..1....1..0..3....3..2..3....3..0..3....0..1..3....2..3..2

CROSSREFS

Sequence in context: A272285 A124595 A186549 * A281330 A289455 A202775

Adjacent sequences:  A236137 A236138 A236139 * A236141 A236142 A236143

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 19 2014

STATUS

approved

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Last modified October 25 11:00 EDT 2021. Contains 348239 sequences. (Running on oeis4.)